Shoppers pick from a range of sandwiches, snacks and soft drinks - but prices may be about to rise.

Raw materials are set to increase 10 per cent by Spring due to the impact of the weak pound, the British Sandwich & Food to Go Association said.

Sarnie makers are also being hit by higher wage wills and uncertainty around recruiting staff.

Jim Winship, director of the British Sandwich and Food to Go Association, said: “Meal Deals have seemingly been fixed at £3 for a long time despite all the market forces of the last few years - it has remained a constant.

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“The industry has adapted well, working with suppliers to ensure this has remained but with fluctuations in the pound, rising commodity prices (particularly cheese) and having resisted years of inflationary pressures, perhaps we will now see a step to £3.10 or so.

“Breaking the £3 barrier would also give retailers more scope to offer more premium sandwiches as part of their range.”

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